Axminster loom



Nov. 1, 1938. E. J. DACEY AXMINSTER LOOM Filed Dec. 20, 1957 lnverfiovEdward J. Haney di /kw Attorney Patented Nov. 1, 1938 Edward J. Dacey,Philadelphia, Pa., assignorto Crompton & Knowles Loom Works, Worcester,Mass, a. corporation of Massachusetts Application December 20, 1937,SeriaINo. 180,814

9 Claims.

This invention relates to improvements in tube frames for Axminsterlooms and it is the general object of the invention'to provide aconstruction permitting the use of a strong hook and ear for lattachment to the transporting chain.

As heretofore constructed it has been customary to provide AXminstertube frames with ears secured to the ends of the frame and ofisetoutwardly for engagement with the double links of 10 the chain. Theattaching hook passes through a slot formed in the ear and this slotweakens the ear so that the latter is not suitable for use with longheavy tube frames. It is an important object of my present invention toprovide a con-- 1' struction employing a relatively heavy ear which issubstantially straight, together with an attaching hook which lieswholly outside the ear so that the latter need not be offset or slotted.

In the usual construction the upper tongue of 20 the ear extends intothe double link of the transporting chain while the hook engages theinner of the link members and lies outside the latter. It is a furtherobject of my present invention to project the hook as well as the earinto the space 35 between two link members of the chain; By thisconstruction the wear incident to attaching and detaching the tube frameis distributed to two; chain members, one engaging the hook and theother engaging the ear.

30 It has been customary hereto-fore to construct the transportingchains of Axminster looms of alternate single and double links, thelatter having holding relation with the ears and hooks of the tubeframes. It is a further object of my 5 present invention to provide anew form of chain having a triple link to replace the double link of theformer construction. My improved chain in effect is the old type ofchain with a third link added to each double link, the space between thethird link and the adjacent member of the double link being suificientlywide to receive both the hook and the ear of the tube frame.

When using the improved chain just described I prefer to have the hooklatched over the intermediate or center member of the triple link.

This places the supporting strain on substantially the same part of thelink as formerly. In older constructions, however the ear which extendsinto the double link has been formed with shoulders .so that the tubeframe when upside down rests on the longitudinal center of the chain. Inorder to retain these same conditions as nearly as possible it is afurther object of my present invention to provide the hook with asupporting lug to enfgage the intermediate member of the triple linkwhen the tube frame is upside down. In order that the spool may be heldagainst accidental turning it is a further object of my invention toprovide a friction pad normally engaging the spool head but moved toreleasingposition by the 5 hook when the latter is pushed from thechain.

With these and other objects in view which will appear as thedescription proceeds, my invention resides in the combination andarrangement of parts herein described and set'forth.

In the accompanying drawing, wherein a convenient embodiment of myinvention is set forth,

Fig. 1 is a vertical longitudinal section through one end of the tubeframe showing the hook in supporting position and the clutch approachinghook releasing position, the spool and tuft yarn tubes being shown inelevation,

Fig.2 is an end elevation taken in the direction of arrow 2, Fig. 1, I

Fig. 3 is a plan View looking in the direction of I0 arrow 3, Fig. l,

Fig. 4 is a detailed vertical section on line 4-4, Fig. 1,

Fig. 5 is a plan view of an improved chain, and

Fig. 6 is a vertical transversesection through IB-= the tube frame takenon line 65 of Fig. 1.

Referring to the drawing, the yarn spool S rotates in a bearing ll!secured to the upper surface of a hollow metal tube l I. The lattercarries the tuft tubes T of usual construction, while the 80 clutch Cmay have an inwardly and downwardly inclined lip l2 and a vertical webl3 carrying a pivot H! to be received by the forward end of a transfer.lever; A rod 16 is pivoted to the upper part of the web l3 for thepurpose of rocking the 35. tube frame about the stud l4 when in clothforming position. The clutch may have the usual side wings I! and beoperated in substantially the usual manner.

A block 20 fits into the end of the tube H and 40: has an internalsquare slide bearing 2| extending therethrough. The block. may be heldin position in any approved manner as-by welding to the tube and hasattached to the inner end thereof a bearing plate 22 held in position byscrews 23 which 45. pass into the block. The plate 22 has a cylindricalsl de bore 24 for a purpose to be described.

The ear or bracket of the tube frame shown is formed of a flat strip ofsheet metal, the lower ends of which are held to the block 20 by screws5'0; 3! and ear extends upwardly as indicated in Fig. 1 without beingoffset in the usual way. The low or part of the bracket has a squarehorizontally extending bore 32 inalignment with the bore 2! of theblock. If desired the upper end of the ear may be reduced as at 33 todefine shoulders 34, see Fig. 2. r

The hook member 40 is of the sliding type and is formed of a flat rigidmetallic strip the upper end of which may be bent in the form of a hook4| in a direction away from the tongue 33. The lower end of the hookmember has welded thereto a square gudgeon 42 which extends through thebore 32 and into the bore 2| of block 25. A reduced cylindricalextension 44 extends through the remainder of the bore 2| and thebearing 24 to project inwardly beyond the plate 22 sufliciently toreceive a collar 45 held in adjusted position along the extension 44 bymeans of a set screw 46. A spring 41 around the extension is interposedbetween the plate 22 and the slide bearing 42 and exerts a compressiveforce tending to move a hook member 40 outwardly or away from the block20 and bracket 30, this motion being limited by the collar 45.

The chain H is formed of single links 50 as shown in Fig. 5 betweenwhich are located triple links formed of members 5| and 52 which arevery similar to corresponding parts of the ordinary tube frame, and anadditional third member 53 spaced from member 52, as suggested in Fig.5. This space is determined by the length of collars 54 on the pins55which hold the links of the chain together. i r

The chainsprocket 6!! may be substantially of the usual form and has aseries of pockets one of which is shown at 6| to receive the tongue 33.The hook member is provided with a lug 65 spaced below the hooked end 4|2. distance somewhat greater than the width of the intervening part oflink 52 for a purpose to be described.

In order that the spool may be held against accidental rotation but freeto turn when pulling off I provide a brake lever 10 pivoted at 1| to thebearing l0 and form this lever with an upper friction arm 12 adapted tobear against the web 13 of the spool head 14. The lever also has a lowerarm 15 projecting through a narrow opening 16 in the ear 3!! andextending beyond the latter sufficiently to be engaged by the hook 4!when the latter moves to chain releasing position. A spring 11 betweenthe hearing If! and the arm 15 holds the upper part 12 of the leveragainst the spool to prevent turning of the latter while the tube frameis being transported by the chain.

In operation, the chain will be given successive step by step motions bymechanism not shown but well understood to place the tube frames one ata time in the position indicated in Fig. 2. When the tube frame arrivesin this position the bracket 30 will extend through the space 863between link members 52 and 53, as will also the hooked end 4| disposedover the link member 52. In this position the lug 65 is under the member52. The relatively heavy compression spring 41 holds the hook in theposition shown in Fig. 1, the collar 45 determining its position.

When the tube frame is to be removed from the chain the clutch movesinwardly or to the left from the position shown in Fig. 1, the lip l2raising the tube frame slightly to lift the hook above the link member52, after which continued inward motion of the'clutch will effectengagement of the wall I3 with the hook member it and the latter willmove to the left against the action of spring 41. The square bearing 42and bore 2| of the block require the hook to move with a right linemotion until the hook 4| is entirely clear of the member 52. As theclutch nears the end of its inward motion it will force the hook member40 against the end 15 on the lever 1|! and rock the same slightly in acounterclockwise direction as viewed in Fig. 1 against the action ofspring 11 to remove the frictional braking force from the spool.

The clutch thereupon descends in well-known manner and the tube frame isrocked about the stud |4 during the tuft forming operation, after whichthe clutch is raised to cause the tongue 33 and the hook 40 to enter thespace of the corresponding triple link. The clutch then moves outwardlyor to the right as viewed in Fig. 1 and hook 4| passes over a linkmember 52. During this motion of the hook the lever 10 returns to itsnormal braking position with respect to the spool under the action ofspring 11. As the clutch nears the outer end of its motion the collar 45will engage the plate 22 and the hook will be properly located withrespect to the link member 52.

As the tube frame travels with the chain the time will come when it willbe over a guide sprocket not shown, but forming the usual part of anAxminster loom, at which time the tube frame will be upside down. Theweight of supporting the hook will thereupon be transferred from thehook 4| to the lug 65. The latter engages a link member 52 at a pointnot far removed from the longitudinal center of the part of the chaindefined by links 50, 5| and 52. The strain of supporting the tube framein this inverted position is therefore borne by member 52 and preferablythough not necessarily is not carried by the member 53 or the collars54. If desired, however, the latter may have engaging relation withrespect to the shoulders 34, but I prefer to depend upon the lug B5 tosupport the tube frame when inverted.

It is to be understood that the matter described and shown in connectionwith Fig. l is duplicated at the opposite end of the tube frame, andthat the clutches and operating mechanism therefor, together with thesprocket 60, are substantially the same as those found in the usualAxminster loom.

The brake mechanism involving the arm 10 and the relation which itsustains to the hook member 40 is not specifically claimed herein but isset forth and claimed in a divisional application.

From the foregoing it will be seen that I have provided a tube framewherein the hook lies entirely outside the ear or bracket 30 and thatthe latter can be made without bending and without the extensiveperforation and slotting as heretofore. It will also be seen that thechain has been modified by adding a third member to the usual doublelink and that both the bracket and the hook pass into the space betweenthe third member and the adjacent member of the usual double link,thereby causing engagement of two members of the chain and distributingthe wear as distinguished from former practice where both the hook andthe'bracket engage the same chain member. It will also'be seen that thelug 65 sup-ports the tube frame when inverted and places the load of theframe on the chain at a point close to the longitudinal center of thatpart of the chain corresponding to earlier types of chains. Also, motionof the hook member 46 releases lever 10 to relieve the friction brake onthe spool.

Having thus described my invention it will be seen that changes andmodifications may be made therein by those skilled in the art withoutdeparting from the spirit and scope of the invention and I do not wishto be limited to the details herein disclosed, but what I claim is:

1. In an Axminster loom, a transporting chain having three transverselyspaced links, a tube frame, an ear secured to the tube frame andextending into a space between an outer link and the center link, asupporting hook mounted on and movable relatively to the ear andextending into said space, and an engaging sprocket for the center linkand the other outside link.

2. In an Axminster loom, a transporting chain having three transverselyspaced links, a tube frame, an ear secured to the tube frame andextending into the space between one of the outer links and the centerlinks, a hook for supporting the tube frame mounted on the latter andmovable relatively to the ear and extending into said space and havingholding relation with respect to the center link, and a sprocket to havedriving relation with the center link'and the other outer link.

3. In an Axminster loom, a transporting chain having a triple linkincluding a center and two outer links spaced from each othertransversely of the chain, a tube frame, an ear secured to the tubeframe extending into the space between the center link and one of theouter links, a supporting hook for the tube frame mounted on the latterand movable relatively to the ear and normally spaced from the latter,said hook extending into said space and having engagement with one ofthe links defining the lateral limits of said space, means to move thehook toward the ear and away from saidone of the links, and a sprocketto engage the center link and the other of said outer links.

4. In an Axminster loom, a transporting chain having a triple linkcomprising a center and two outer links spaced from eachothertransversely of the length of the chain, a tube frame, an ear secured totheltube frame and extending into the space between one of the outerlinks and the center link, a hook supported by the tube frame andmovable relatively to the ear and extending into said space forengagement with the center link, means to move the hook in said spaceaway from the center link toward the ear to disconnect the tube framefrom the chain, and a driving sprocket to engage the center link and theother of said outer links.

5. In an Axminster loom, a transporting chain having a pair of spacedlinks, a tube frame, an ear secured to the tube frame and extending intothe space between said links and lying adjacent one of said links, ahook for supporting the tube frame on the chain, means to mount the hookfor movement on the tube frame relative to the ear,

the ear.

' 3 said hook extending into the space between the links and engagingthe other of said links, whereby wear incident to engagement of the earand hook by the chain will be distributed to the two links, and means tomove the hook toward the ear and away from the link normally engagedtherewith.

6. In an Axminster loom, a tube frame, a transporting chain having apair of laterally spaced links, an, ear secured to the tube frame andextending into the space between the links adjacent one of the latter, ahook mounted on the tube frame for movement toward the ear and extendinginto the space between said links, said hook having a part bent in adirection away from the ear for engagement with the other of said links,and means to move the hook toward the ear and away from the linknormally engaged therewith.

'7. In an Axminster loom, a transporting chain, a tube frame, an earsecured to the tube frame and extending into engaging relation withrespect to the chain, a supporting hook for the tube frame locatedwholly on that side of the ear remote from the longitudinal center ofthe tube frame and having holding relation with respect to the chain,and a sliding support for the hook extending through the ear and intothe tube frame to establish supporting relation between the hook and thetube frame.

8. In an Axminster loom, a transporting chain, a tube frame, an earsecured to the tube frame and extending into engaging relation withrespect to the chain, a hook for the tube frame to engage the chain,said hook lying entirely on that side of the ear remote from thelongitudinal center of the tube frame, a slide bearing on the tubeframe, a slide member secured to the hook and extending through the earand into the slide bearing to establish supporting relation between thetube frame and the chain, and means to move the hook relatively to theear out of supporting relation with respect to the chain.

9. In an Axminster loom, a transporting chain, a tube frame, an earsecured tothe tube frame and extending into engaging relation withrespect to the chain, a supporting hook for the tube frame locatedwholly on that side of the ear remote from the longitudinal center ofthe tube frame and having holding relation with respect to the chain, asliding support for the hook extending through the ear and into the tubeframe to establish supporting relation between the hook and the tubeframe, and means to limit motion of the supporting hook in a directionaway from EDWARD J. 'DACEY.

